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Fraser
2005-Mar-29, 01:51 AM
SUMMARY: Some current models of galaxy formation predict that large spirals such as the Milky Way and Andromeda Galaxy should have more satellite galaxies than are currently known to astronomers. Many of these galaxies should be much smaller than those already discovered. Astronomers reviewing data from the automated Sloan Digital Sky Survey (SDSS) have now added another satellite to the Milky Way's dwarf spheroidal galaxy contingent and this one is a real lightweight.

View full article (http://www.universetoday.com/am/publish/dwarf_galaxy_uma.html)

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antoniseb
2005-Mar-29, 04:12 PM
Originally posted by fraser@Mar 29 2005, 01:51 AM
Astronomers reviewing data from the automated Sloan Digital Sky Survey (SDSS) have now added another satellite to the Milky Way's dwarf spheroidal galaxy contingent and this one is a real lightweight.
I'll be interested in reading what they have to say about the history of this object. I imagine it has already been stripped of its dust and gasses. I wonder how old the youngest stars in it are, and when it's main star forming era was.

The Near-Sighted Astronomer
2005-Mar-29, 04:40 PM
Hi Anton,

This is one obscure little galaxy here. We won't really get a good image of it until we get a full soak of photons from a big eye somewhere. The article should be retrofitted with new images shortly. As the article says this one was right on the limits of detectability.

jeff

John L
2005-Mar-29, 05:55 PM
Is there a comprehensive sight with images and the location in the sky of the know dwarf galaxies? How many of them can be seen from the northern hemisphere, and what are their magnitudes? Will I need to have my own big eye as Jeff mentioned above to see any other than the Magellanic Clouds?

The Near-Sighted Astronomer
2005-Mar-29, 06:56 PM
I did a quick google search for a comprehensive article on the Milky Way and companion galaxies - no luck. Something like this would be nice to get written up but it won't make UT since UT is more about breaking news. I'll keep the idea on the "back burner" for astro.geekjoy - hopefully my friends server will get plugged in again soon!

lswinford
2005-Mar-29, 09:04 PM
There is this link from seds: http://www.seds.org/messier/more/local.html.

There is this link for Washington U: http://www.maa.mhn.de/Scholar/galaxies.html

Maybe something to link from there, or a correlation that google might make.

BTW: several years ago someone (I was thinking it may have been from an Arizona observatory, but the recollection is a little fuzzy) spotted a small galaxy like this nearby, and at the announcement called it the Snickers Galaxy, because it was 'peanuts' compared to the Milky Way. With that recollection, I'll open up a 3 Musketeers and offer a toast to fun astronomy.